Explosive



Patented Nov. 22, 1927.

, UNITED STATES PATENT orrlcr.

HUBERT H. CHAMPNEY, OF KENVIL, NEW JERSEY, ASSIGNOR TO HERCULES POWDER COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELAWARE.

EXPLOSIVE.

No Drawing.

My invention relates to an improvement in explosives and more particularly to an improvement in permissible explosives.

The so-called permissible explosives when subjected to relatively high atmospheric temperatures, such as, for example, are encountered during the summer season, become hard or insensitive to detonation with a blasting cap. As a result of thistendency of the so-called permissible explosives, they are, during the summer season, unreliable.

Now it is the object of my invention to provide an explosive which will fall in the socalled permissible class, but which will not become hard or insensitive when sub ected to relatively high atmospheric temperatures.

The ordinary so-cal'led permissible explosive is composed. for example, of nitroglycerine, nitrate of ammonia, sodium nitrate 2a and a carbonaceous ingredient as sawdust,

button meal. For the nitrobe substituted, in whole or in nitropolyglycerins, n'itroglycols, or

pulp or ivory glycerme may part,

mixtures, or nitrosugars or nitroaromatio compounds, or mixtures in solution in nitroglycerine.

In accordance with my invention, I utilize ground oat hu'lls as an ingredient inthe socalled permissible explosive in substitution,

: in whole or in part, for the carbonaceous ingredients, as sawdust, pulp, or ivory nut meal.

Ground oat hulls, as is well known, comprise the hulls of oats and I have found that they may be utilized in varying proportions of (say) from two per cent to. eighteen er cent by weight, depending upon whethert ey displace all or only a part of the carbo- .uaceous ingredients, and will prevent setting 40 or loss of sensitiveness toward a blasting cap, when the explosive is subjected to elevated temperatures.

Explosives in accordance with my invention may, for example, comprise, in addition to ground oat hulls from 2%18%, a sensitizer as nitroglycerine, by which I mean to include nitroglycerine, nitropo'lyglycerines, nitroglycols, or mixtures, nitrosugars, or nitroaromatic compounds in solu- Application filed May 8, 1925. Serial No. 28,958.

tion in nitroglycerine, or mixtures, say about 5 10%; an explosive, as ammonium nitrate,

say %80%; sodium nitrate, say up to 22%; carbonaceous ingredients, as wood pulp, say 6% or less; and ivory nut meal, say 2% or less. The following formulae may be stated by way of example:

Per Per cent. cent. Nitroglycerine 10 10 Ammonium nitrate 80 5O Sodium nitrate 22 Wood pulp 6 Ivory meal 2 Ground oat hulls 2 18 It will be understood that I do not intend that my invention shall be limited to the use of any particular proportions of ground oat hulls, nor to explosives having ingredients in the exact proportions above stated by way of example.

Having now fully described my invention, what I claim and desire to protect by Letters Patent is:

1; In an explosive in admixture, an explosive ingredient, a sensitizer, and ground oat hulls.

2. In an explosive in admixture, nitroglycerine about 10%, ammonium nitrate, and ground oat hulls from 2%18%.

3. In an explosive in admixture, nitroglycerine about 10%, ammonium nitrate from 50%80%, and ground oat hul'ls from 2%-1s%.

4. In an explosive in admixture, nitroglycerine about 10%, ammonium nitrate about 50%, sodium nitrate about 22%, and ground oat hulls about 18%.

5. In an explosive in admixture, ammonium nitrate, asensitizer and ground oat hulls.

6. In an explosive in admixture, ammoniumnitrate, sodium nitrate, a sensitizer 95 and ground oat hulls.

7. In an explosive in admixture, ammonium nitrate, a sensitizer and ground oat hulls from 2%-18%.

8.v In an explosive in admixture, ammonlum nitrate, sodium nltrate, a sensitlzer and ground out hulls from 2%18%.

9. In an explosive in glycerine about 10%,

admixture, nitrofrom' 50%80%, ground oat hulls not less than 2% and other not over 8%.

carbonaceous material ammonium nitrate.

HUBERT H. CHAMPNEY. 

